Historical weather data, all-time temperature records, and monthly climate averages for Munster, IN. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4 in Munster sits in that classic Midwest in-between zone — expect a high around 55° and a low near 34°, with a coin-flip-ish 43% chance of rain. The date has swung wildly over the years, from a balmy 80° in 2012 to a brutal 18° low back in 1982. Snow is nearly off the table at just 1%.
Munster earns its Midwest stripes with some genuinely extreme numbers on the books. Summer peaks hard — 103° in August 1988 — and winter can be punishing, bottoming out at -27° in January 1985. A single July storm in 1996 dumped 6.55 inches of rain in one day, and a February 2011 snowstorm buried the town under 19 inches.
Munster follows a sharp four-season rhythm: summers are hot and humid, with highs hitting the mid-80s in mid-July, while mid-January averages just 29°. July is both the warmest and wettest stretch of the year, averaging 1.29 inches in a single week. If you're planning a visit, May through June and September through October offer the most comfortable conditions before the extremes kick in.